This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX270, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SI160 Standard Cylinder SI160BX270
The AirTAC SI160 Standard Cylinder SI160BX270 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 270mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX270, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke270 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX270
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SI160 Standard Cylinder SI160BX270
The AirTAC SI160BX270 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 270 mm stroke. Delivering 10053 N push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI160BX270. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, force, port and accessories. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
This specific SKU uses a SUS304 stainless piston rod (the -B option) for corrosion resistance instead of standard carbon steel. Because it lacks the -S magnet, it cannot accept a position switch. For load holding, note that a plain cylinder drifts on air loss—the cushion only decelerates. Use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. Viton H seals raise the temperature range to 0-150 C.
Airtac SI160 Standard Cylinder SI160BX270 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX270 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX270 |
| Bore size | Ø160 mm |
| Stroke | 270 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI160BX270 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
The SAI160BX270 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI160 Standard Cylinder SI160BX270
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×270 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SI160 Standard Cylinder SI160BX270 Is Used
Heavy Stamping Press
Drives large heavy-duty stamping actuators where the 10053 N push force at 0.5 MPa is required to form thick metal plates.
Injection Mould Clamp
Secures large industrial injection moulding tools using the SUS304 stainless rod for corrosion resistance in humid environments.
Replacing the Airtac SI160 Standard Cylinder SI160BX270 with the SAI160BX270
To replace the SI160BX270, order the SAI160BX270. Confirm the ISO 15552 mounting interface, 160 mm bore, 270 mm stroke, G3/4 port, and your specific mounting accessory. This SKU has no -S magnet, so it cannot take CS1-B/DS1-B sensors; if sensing is needed, order the SAI with an S suffix. Sizing both ways: the 160 mm bore yields 10053 N push at 0.5 MPa, while the neighbouring 125 mm bore offers 6136 N. For any stroke >=300 mm, add external guidance to prevent rod bending under side loads. If you need load holding on air loss, use the SAIL or BSAI lock variant, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX270
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI160 Standard Cylinder SI160BX270 FAQ
Yes, the SI160BX270 is discontinued. The direct replacement is the SAI160BX270. It shares the same ISO 15552 mounting interface, 160 mm bore, 270 mm stroke, output force, G3/4 port, and mounting accessories, fitting existing fixtures perfectly.
The 160 mm bore has a G3/4 port. Force ratings are: 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, 18095 N push at 0.9 MPa, and a theoretical max of 2050 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX270
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